<html>
    
    <!-- <script src="vertexShader" type="x-shader/x-verttex">
        attribute vec4 vPosition;
        void main()
        {
            gl_Position = vPosition;
        }
    </script>
    <script src="fragmentShader" type="x-shader/x-fragment">
        precision mediump float;
        void main()
        {
            gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
        }
    </script>
     -->
    
    
    
    <body>
        <canvas id="canvas" width="320" height="240">
            not support webgl   
        </canvas>
    </body>
    
    <script src="./drawTriangle.js"></script>


</html>
